Mercurial > sdl-ios-xcode

annotate src/video/x11/SDL_x11touch.c @ 5284:96a22141cf86 tip

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Changed output directory of Universal libSDL.a for iOS to respect build configurations. Template generator was updated to reflect these changes as well.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 12 Feb 2011 21:52:30 -0800
parents b530ef003506
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b530ef003506 Happy 2011! :)
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3 Copyright (C) 1997-2011 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23 #include "SDL_x11video.h"
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24 #include "SDL_x11touch.h"
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25 #include "../../events/SDL_touch_c.h"
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26
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27
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28 #ifdef SDL_INPUT_LINUXEV
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29 #include <linux/input.h>
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30 #include <fcntl.h>
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31 #endif
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32
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33 void
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34 X11_InitTouch(_THIS)
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35 {
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36 #ifdef SDL_INPUT_LINUXEV
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37 FILE *fd;
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38 fd = fopen("/proc/bus/input/devices","r");
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39
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40 char c;
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41 int i = 0;
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42 char line[256];
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43 char tstr[256];
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44 int vendor = -1,product = -1,event = -1;
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45 while(!feof(fd)) {
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46 if(fgets(line,256,fd) <=0) continue;
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47 if(line[0] == '\n') {
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48 if(vendor == 1386){
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49 /*printf("Wacom... Assuming it is a touch device\n");*/
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50 /*sprintf(tstr,"/dev/input/event%i",event);*/
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51 /*printf("At location: %s\n",tstr);*/
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52
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53 SDL_Touch touch;
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54 touch.pressure_max = 0;
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55 touch.pressure_min = 0;
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56 touch.id = event;
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57
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58
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59 touch.driverdata = SDL_malloc(sizeof(EventTouchData));
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60 EventTouchData* data = (EventTouchData*)(touch.driverdata);
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61
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62 data->x = -1;
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63 data->y = -1;
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64 data->pressure = -1;
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65 data->finger = 0;
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66 data->up = SDL_FALSE;
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67
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68
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69 data->eventStream = open(tstr,
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70 O_RDONLY | O_NONBLOCK);
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71 ioctl (data->eventStream, EVIOCGNAME (sizeof (tstr)), tstr);
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72
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73 int abs[5];
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74 ioctl(data->eventStream,EVIOCGABS(0),abs);
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75 touch.x_min = abs[1];
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76 touch.x_max = abs[2];
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77 touch.native_xres = touch.x_max - touch.x_min;
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78 ioctl(data->eventStream,EVIOCGABS(ABS_Y),abs);
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79 touch.y_min = abs[1];
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80 touch.y_max = abs[2];
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81 touch.native_yres = touch.y_max - touch.y_min;
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82 ioctl(data->eventStream,EVIOCGABS(ABS_PRESSURE),abs);
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83 touch.pressure_min = abs[1];
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84 touch.pressure_max = abs[2];
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85 touch.native_pressureres = touch.pressure_max - touch.pressure_min;
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86
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87 SDL_AddTouch(&touch, tstr);
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88 }
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89 vendor = -1;
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90 product = -1;
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91 event = -1;
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92 }
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93 else if(line[0] == 'I') {
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94 i = 1;
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95 while(line[i]) {
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96 sscanf(&line[i],"Vendor=%x",&vendor);
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97 sscanf(&line[i],"Product=%x",&product);
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98 i++;
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99 }
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100 }
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101 else if(line[0] == 'H') {
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102 i = 1;
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103 while(line[i]) {
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104 sscanf(&line[i],"event%d",&event);
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105 i++;
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106 }
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107 }
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108 }
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109
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110 close(fd);
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111 #endif
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112 }
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113
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114 void
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115 X11_QuitTouch(_THIS)
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116 {
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117 SDL_TouchQuit();
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118 }
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119
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120 /* vi: set ts=4 sw=4 expandtab: */